Improvement in copying-presses



UNITED-(STATES PATENT OFFICE..

- SAMUEL SELDEN, OF ERI'E, PENNSYLVANIA.

IMPROVEMENT IN COPYING-PRESSES.

Specification forming part of Letters Patent No. 154,286, dated August 18,1874; application filed March 19, 1874.

To all whom it may concera Be it known that I, SAMUEL SELDEN, of Erie, in the county of Erie, State of Pennsylvania, have invented certain new and useful Improvements in Copying Presses, of which the following is a full, clear, and exact description, reference being had to the accompanying drawing making part of this specification, in which- Figure 1 represents a perspective view of the improved press. Fig. 2 represents a central longitudinal section through part of the same, and Fig. 3 is a perspective view of one of the end socket-standards detached..

Similar letters of reference denote corresponding parts in all the figures. The invention relates to that class of copylng-presses in which the movable presserplate is actuated by a cam or cams and springs; and consists in a novel construction and arrangement of parts, whereby the cost of vmanufacture is reduced and the operation simplified.

The improvement will be best understood from the following description with reference to the drawings, in whichl A represents the bed-plate, made of wood, rectangular in form, vand of suitable thickness and weight to give the desired solidity. B B are end standards, of metal, provided with auges b bthrough which they are rmly secured to the bed-plate by screws, and an outwardly-projecting foot-flange, b2, adapts the press, where -it is desired, togbe firmly secured to the table or platform on whichV it rests. The inner faces of the standards Bl are provided, each, with a vertical socket or recess, within which lugs or ears c on the movable upper presser-plate C move up: and down as the presser-plate isactuated. The standards B, and the recesses or sockets B' therein, may be of any desired height, according to the extent of movement it is desired to give to the plate C. The lugs or ears c are provided with short pendent spurs or pins c,land spiral springs a, loeatedin the recesses B at their upper ends, surround these pins c', the lower ends of the springs resting at the bottom of the sockets or recesses B', and the upper ends against the lugs or ears c.' Vrlhe recesses B thus serve to guide the vertical movements of the presser-plate C,

and also to inclose the springs a, which upis rotated in one direction, serve to force the said plate downward against the tension of the springs a, and, when rotated in the reverse direction, to release the plate and allow it to be raised by the springs.

The angular or arched shaft D, with its cams D1, pivots d, and handle D2, are, by pref erence, cast in one piece, though the cams and handle may be made separate from and applied to the shaft, if desired.

The presser-plate C, for the purpose of combining rigidity with lightness, may be made quite thin, and provided on its edges with vertical stiifening rim or flange e, and with a central longitudinal rib, E, and may also be cast with the numerous perforatons therein, as shown in Fig. 1.v ff are buffers of wood, leather, or rubber, set in sockets in plate C, for receiving the blow or thrust of the handle D at the end of its throw in either direction. The angular shaft D is also made of thin metal, stiifened by rims or anges d.

For adapting the press to different thickness of copying-books, removable pads A are employed, these pads being retained in place by vertical ribs or lips b3 on the inner faces of the standards B, which enter notches cut in the ends of the pads A', and prevent their accidental displacement. These pads, which, by preference, are made of wood, may be cush ioned, if desired, upon pads a. of paper or other suitable material.

IV1n the use of the cams for actuating the Y The recessed standards BB, provided'witli presser-plate, as deseribed,the extent of movethe'vertical ribs b3, in combination WithA the ment of said plate is necessarily restricted base-plate A, removable pads A', presser-plate within certain limits, and the removable pads C, cams D1, and springs a, all arranged and are, therefore, essential to adapt the press to operating as described. different thicknesses of books, as explained.

The operation of the press will be readily understood without further description, Witnesses:

What is claimed as n new, and sought to be SAMUEL; S. SPENCER, secured by Letters Patent, is MATTHEW GRIsWoLD, Jr.

SAM. SELDEN. 

